Corentin Moutet used to use Alu Power but lately it looks like a black or dark string. Anyone know what string he switched to? For those interested he uses the actual racquet he endorses, a 300g Technifibre TF-X 1 300 V2 with 3-4g added inside tge throat, 1-1.5g each side vertically with 1/2 inch tape and 0.5-0.75g eash side under the bridge.